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Thrust Bearing

Description: Patent for a thrust bearing. Illustration included.
Date: January 7, 1913
Creator: Johnston, Horace G.
Partner: UNT Libraries Government Documents Department

Car Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design "consists in the combination of two draw-heads, in one of which is a spring-actuated jaw, which acts as a support for the coupling-pin until the jaw is pushed back into the coupling-head, and in the other a slotted spring-actuated jaw, which has its end so formed as to support the link in position ready to couple" (lines 11-18).
Date: August 7, 1883
Creator: Learmonth, James
Partner: UNT Libraries Government Documents Department

Rock Drilling and Well Boring Machine.

Description: Patent for improved rock drilling and well boring machine.
Date: July 7, 1885
Creator: Embry, Leonard B.
Partner: UNT Libraries Government Documents Department

Car Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design consists of "a yielding draw-head having a horizontally-moveable coupling-pin and a pivoted lever connected to said pin, of a rotatable latching-plate connected with said lever by a rod or chain, a spring for acting on the pin-lever, and a spring-catch for engaging the latch-plate, said catch and latch-plate being disengaged by the pressure of the draw-head in the act of coupling, thereby releasing the retracted coupling-pin … more
Date: December 7, 1886
Creator: Sessions, Egbert G.
Partner: UNT Libraries Government Documents Department

Stalk-Cutter Attachment.

Description: Patent for a planter attachment. It allows quick attachment of a stalk cutter that would let a planter serve two purposes.
Date: February 7, 1922
Creator: Haynes, Jack M.
Partner: UNT Libraries Government Documents Department
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